Node js

In this tutorial, we will explore three different ways of installing Node.js and npm on Ubuntu 20.04: • From the standard Ubuntu repositories. This is the easiest way to install Node.js and npm on Ubuntu and should be sufficient for most use cases. The version included in the Ubuntu repositories is 10.19.0. • From the NodeSource repository. Use this repository if you want to install a different Node.js version than the one provided in the Ubuntu repositories. Currently, NodeSource supports Node.js v14.x, v13.x, v12.x, and v10.x. • Using nvm (Node Version Manager). This tool allows you to have multiple Node.js versions installed on the same machine. If you are Node.js developer, then this is the preferred way of installing Node.js. Choose the installation method that is appropriate for your environment. If you are not sure which Node.js version to install, consult the documentation of the application you’re going to deploy. Install Node.js and npm from the Ubuntu repository At the time of writing, the Node.js version included in the Ubuntu 20.04 repositories is 10.19.0 which is the previous TLS version. The installation is pretty straightforward. Run the following commands to update the package index and install Node.js and npm: sudo apt update sudo apt install nodejs npm The command above will install a number of packages, including the tools necessary to compile and install native addons from npm. Once done, verify the installation by running: nodejs --version v10.19.0 In...

Edit Node.js tutorial in Visual Studio Code Visual Studio Code has support for the JavaScript and TypeScript languages out-of-the-box as well as Node.js debugging. However, to run a Node.js application, you will need to install the Node.js runtime on your machine. To get started in this walkthrough, node and npm command-line tools to be on your PATH. To test that you have Node.js installed correctly on your computer, open a new terminal and type node --version and you should see the current Node.js version installed. Linux: There are specific Node.js packages available for the various flavors of Linux. See Windows Subsystem for Linux: If you are on Windows, WSL is a great way to do Node.js development. You can run Linux distributions on Windows and install Node.js into the Linux environment. When coupled with the Hello World Let's get started by creating the simplest Node.js application, "Hello World". Create an empty folder called "hello", navigate into and open VS Code: mkdir hello cd hello code . Tip: You can open files or folders directly from the command line. The period '.' refers to the current folder, therefore VS Code will start and open the Hello folder. From the File Explorer toolbar, press the New File button: and name the file app.js: By using the .js file extension, VS Code interprets this file as JavaScript and will evaluate the contents with the JavaScript language service. Refer to the VS Code Create a simple string variable in app.js and send the contents...

In this article Applies to: Visual Studio Visual Studio for Mac Visual Studio Code With Visual Studio, you can easily create a Node.js project and use IntelliSense and other built-in features that support Node.js. In this tutorial, you create a Node.js web app project from a Visual Studio template. Then, you create a simple app using React. In this tutorial, you learn how to: Important Starting in Visual Studio 2022, you can alternatively Before you begin, here's a quick FAQ to introduce you to some key concepts: • What is Node.js? Node.js is a server-side JavaScript runtime environment that executes JavaScript code. • What is npm? The default package manager for Node.js is npm. A package manager makes it easier to publish and share Node.js source code libraries. The npm package manager simplifies library installation, updating, and uninstallation. • What is React? React is a front-end framework for creating a user interface (UI). • What is JSX? JSX is a JavaScript syntax extension typically used with React to describe UI elements. You must transpile JSX code to plain JavaScript before it can run in a browser. • What is webpack? Webpack bundles JavaScript files so they can run in a browser, and can also transform or package other resources and assets. Webpack can specify a compiler, such as Babel or TypeScript, to transpile JSX or TypeScript code to plain JavaScript. Prerequisites This tutorial requires the following prerequisites: • Visual Studio with the Node.js developm...

This guide is for anybody looking to learn more about how Node.js works, its pros and cons and how it can help deliver tangible business results. We’ll begin by defining what Node.js is and give a brief history of its development, before listing some pros and cons, with examples to highlight them. There’ll also be some tips on how to host and maintain Node.js applications and how Node.js compares with other programming languages. So, let’s get going. What is Node.js (and why does it matter)? Node.js is an open source, cross-platform runtime environment and library that is used for running web applications outside the client’s browser. It is used for server-side programming, and primarily deployed for non-blocking, event-driven servers, such as traditional web sites and back-end API services, but was originally designed with real-time, push-based architectures in mind. Every browser has its own version of a JS engine, and node.js is built on Google Chrome’s V8 JavaScript engine. Sounds a bit complicated, right? In simple terms, what this means is that entire sites can be run using a unified ‘stack’, which makes development and maintenance quick and easy, allowing you to focus on meeting the business goals of the project. The fact that Node.js is open source means that it is free to use and constantly being tweaked and improved by a global community of developers. An important thing to understand about Node.js is that it is actually neither a framework or a library - as with...

JavaScript is one of the most popular programming languages in the world. It powers millions of websites today, and it has attracted droves of developers and designers to build features for the web. If you’re new to programming, JavaScript is easily one of the For its first 20 years, JavaScript was used mainly for client-side scripting. Since JavaScript could be used only within the tag, developers had to work in multiple languages and frameworks between the front-end and back-end components. Later came Node.js, which is a run-time environment that includes everything required to execute a program written in JavaScript. Node.js is a single-threaded, open-source, cross-platform runtime environment for building fast and scalable server-side and networking applications. It runs on the V8 JavaScript runtime engine, and it uses event-driven, non-blocking I/O architecture, which makes it efficient and suitable for real-time applications. What Is Node.js Written In? Node.js is written in C, C++, and JavaScript. The runtime uses Node.js Architecture and How It Works Node.js uses the “Single Threaded Event Loop” architecture to handle multiple clients at the same time. To understand how this is different from other runtimes, we need to understand how multi-threaded concurrent clients are handled in languages like Java. Is your web app slow? Uncover performance bottlenecks to deliver a better user experience and hit your business’s revenue goals. In a multi-threaded request-respons...